Three notes, five notes, seven notes — and different ways of exploring the same tonal relationships. What makes the FET Call-and-Response collections different from one another?
All FET Call-and-Response Tracks share the same basic idea: You hear a short musical phrase and respond by singing or playing it yourself.
But the collections aren’t all the same.
Some use only a small selection of scale degrees, while others introduce a wider range of notes. And although the underlying harmony may remain unchanged, the choice of notes can make a considerable difference to what you hear and practice.
Let’s have a closer look at the different collections and the musical ideas behind them.
What All Four Collections Have in Common
The current Call-and-Response collections are built around a tonic major seventh chord.
In the key of C major, that would be Cmaj7, consisting of the notes C, E, G, and B.
This chord provides a consistent harmonic reference while the calls explore different notes of the major scale.
Each collection is available in all twelve keys, so you can practice the same functional relationships at different absolute pitches.
And each exercise is provided in three versions:
- Instrumental Calls: The notes are played by an instrument, without naming their functions.
- Nashville Numbers: A singer performs the calls using scale-degree numbers such as One, Two, and Three.
- Movable-Do Solfa: A singer performs the same calls using syllables such as Do, Re, and Mi.
The difference between the collections lies primarily in which scale degrees are available for the musical phrases.
Collection 1: Just Three Notes — Do, Re, Mi
1 Maj7 only – notes 1 (Do), 2 (Re) and 3 (Mi)
This collection concentrates on the first three degrees of the major scale:
1 – 2 – 3
Do – Re – Mi
In C major, those notes are C, D, and E.
All three are heard against the tonic major seventh chord.
This is the most restricted note selection in the current FET Call-and-Response range.
What’s interesting about these three notes?
Although there are only three possibilities, the notes have distinctly different relationships to the underlying chord.
Do (1) is the root of the chord and the tonal center.
Re (2) is the second degree of the scale. In relation to the major seventh chord, it functions as the ninth, adding a different harmonic color.
Mi (3) is the major third of the chord, an important part of its harmonic identity.
So you’re not merely practicing three neighboring pitches. You’re exploring three different musical functions within the same harmonic environment.
Try listening to the calls without concentrating too much on whether the melody moves up or down.
Instead, pay attention to the characteristic sound of each degree.
What does Do sound like against the chord? How does Re differ from Mi?
The limited selection makes it easier to concentrate on these distinctions.
Explore this collection if you want to become familiar with a small number of scale degrees in a stable harmonic context.
Listen to the three-note collection on Bandcamp
Collection 2: Five Notes — Do to So
1 Major 7 Notes 1–5 (Do to So)
The second collection extends the available notes to the first five degrees of the major scale.
1 – 2 – 3 – 4 – 5
Do – Re – Mi – Fa – So
In C major, these are C, D, E, F, and G.
The underlying harmony is still the tonic major seventh chord.
What changes is the selection of notes that can appear in the calls.
Two new scale degrees
Adding Fa and So brings two more distinct functions into play.
Fa (4) is the fourth scale degree. Against a major seventh chord, it has a characteristic relationship to the chord’s major third. Their close proximity can create a particularly noticeable tension.
So (5) is the fifth of the chord, a stable chord tone.
The five-note collection therefore includes a mixture of chord tones and notes outside the basic four-note chord structure.
It also introduces more possible melodic combinations.
For example, you can now hear phrases moving between Do and So, or between Mi and Fa.
These relationships weren’t available in the three-note collection.
Why might you choose this collection?
The five-note selection offers more melodic variety while keeping the number of possible scale degrees manageable.
You might use it after working with Do, Re, and Mi, or simply choose it because you want to concentrate on the lower five degrees of the major scale.
There is no need to regard it as a level you must complete before exploring other material.
Explore this collection if you want to work with Do through So while retaining the same stable major seventh harmony.
Listen to the five-note collection on Bandcamp
Collection 3: All Seven Scale Degrees — Do to Ti
1 Major7 only – notes 1–7 (Do to Ti)
This collection uses all seven degrees of the major scale:
1 – 2 – 3 – 4 – 5 – 6 – 7
Do – Re – Mi – Fa – So – La – Ti
In C major, the notes are C, D, E, F, G, A, and B.
Once again, the harmonic reference is the tonic major seventh chord.
What changes when all seven notes are available?
You now have the complete diatonic note selection of the major scale.
The calls can include all four notes of the underlying major seventh chord:
- Do (1) – Root
- Mi (3) – Major third
- So (5) – Perfect fifth
- Ti (7) – Major seventh
They can also include the other three scale degrees:
- Re (2) – Ninth
- Fa (4) – Fourth or eleventh
- La (6) – Sixth or thirteenth
These notes don’t all have the same relationship to the chord.
Some are chord tones, while others provide additional harmonic color or tension.
Because the harmony remains constant, you can explore those differences without also having to follow changing chords.
A wider range of possible phrases
With seven available scale degrees, the musical phrases can be more varied.
And there are more note identities to distinguish.
You might find that certain notes become familiar quite quickly, while others are less immediately recognizable.
That’s one reason why exercises with smaller note selections can remain useful even after you’ve started working with all seven degrees.
Explore this collection if you want to practice recognizing and reproducing all seven degrees of the major scale against a tonic major seventh chord.
Listen to the seven-note collection on Bandcamp
Collection 4: So to So — A Different Part of the Scale
1 Major7 only – 5–5 (So to So)
The fourth collection approaches the note selection from a different direction.
Rather than starting on Do and moving up through the scale, it focuses on the range from So to the So an octave higher.
In scale-degree terms, this gives you:
5 – 6 – 7 – 1 – 2 – 3 – 4 – 5
Or:
So – La – Ti – Do – Re – Mi – Fa – So
Notice that this is not a new scale.
These are still the familiar degrees of the major scale, heard against the same tonic major seventh harmony.
What changes is their placement within the melodic range.
Why does the starting point matter?
Scale degrees are defined by their relationship to the tonic, not by their position in a particular octave.
Do remains Do whether you sing it in a low register or a high one.
The same is true of the other degrees.
But the register and the notes surrounding a particular degree can influence the way a melodic phrase is perceived.
Compare two passages of the C major scale:
C – D – E – F – G
and
G – A – B – C – D – E – F – G
In the first passage, the tonic C appears at the beginning.
In the second, the phrase starts on the dominant G and reaches C in the middle of its range.
The tonal center hasn’t changed. The underlying chord is still Cmaj7.
But the way the notes are arranged within the available pitch range is different.
The same functions in a different setting
The So-to-So collection is an opportunity to explore familiar scale degrees without always treating Do as the lowest available note.
That can be especially interesting when you’ve become accustomed to working with the scale from Do upwards.
Remember: the lowest note of a phrase is not necessarily its tonic.
Explore this collection if you want to hear familiar scale-degree functions in a different register and melodic range.
Listen to the So-to-So collection on Bandcamp
Comparing the Four Collections
Here’s an overview of the different note selections.
| Collection | Scale degrees | Main characteristic |
|---|---|---|
| Do–Mi | 1, 2, 3 | Three-note selection |
| Do–So | 1, 2, 3, 4, 5 | Five-note selection |
| Do–Ti | 1, 2, 3, 4, 5, 6, 7 | Complete major-scale selection |
| So–So | 5, 6, 7, 1, 2, 3, 4, 5 | Different melodic range, starting on So |
All four collections use a tonic major seventh chord as their harmonic reference.
The distinction is not primarily about changing the chord, but about changing the set of notes available for the calls.
Why Use Different Note Selections?
You might wonder why the collections don’t simply use the complete major scale from the beginning.
After all, if the aim is to become familiar with all seven scale degrees, wouldn’t it make sense to practice them all?
That’s certainly possible.
But working with a restricted note selection provides a different kind of listening task.
With three possible degrees, you can concentrate on a small set of relationships.
With five, you introduce more possibilities while still leaving out some of the scale.
With all seven, you explore the complete diatonic collection.
And with So to So, you encounter familiar functions within a different melodic range.
Each selection changes the musical material you hear and reproduce.
That doesn’t mean there’s one ideal progression that everybody should follow.
You can move between the collections according to what interests you or what you want to concentrate on.
The Role of the Major Seventh Chord
There’s another important detail shared by these collections: the tonic major seventh chord.
You might ask why the exercises don’t simply use the tonic note as a drone.
A sustained tonic provides a clear pitch reference, but a major seventh chord provides a richer harmonic context.
The chord contains four different scale degrees, and the remaining degrees can be heard in relation to that harmony.
This gives each note more than one possible relationship to explore.
For example, Re is the second degree of the major scale, but it is also the ninth in relation to the tonic major seventh chord.
Similarly, Ti is the seventh scale degree and the major seventh of the chord itself.
These descriptions refer to the same notes from slightly different musical perspectives.
The FET Call-and-Response collections allow you to explore those sounds directly rather than relying exclusively on theoretical descriptions.
The Collections Are Musical Tools, Not Levels to Pass
It’s tempting to think of the collections as a staircase:
Three notes, then five, then seven, and finally So to So.
But that isn’t quite how they need to be used.
The three-note collection isn’t only for beginners. The seven-note collection isn’t automatically the best choice for more experienced musicians.
A smaller selection can be useful whenever you want to focus on particular musical relationships.
And the So-to-So collection offers a different melodic range rather than simply another difficulty level.
You might spend some time exploring all seven degrees, then return to Do, Re, and Mi to listen more closely to those three notes.
Or alternate between Do-to-Ti and So-to-So to explore how register and melodic range affect what you hear.
The collections give you different musical situations to explore. You’re free to use them in whichever order makes sense to you.
Listen and Compare
One of the simplest ways to understand the differences between the collections is to listen to them.
Choose the same key in two different releases.
Start with the three-note collection and notice the limited selection of pitches.
Then listen to the five-note version.
What changes when Fa and So become available?
Next, try the seven-note collection and listen for the additional degrees.
Finally, compare Do-to-Ti with So-to-So.
You’re working within the same major-scale tonality, but the available pitch range is organized differently.
And because the collections offer instrumental, Nashville Numbers, and Movable-Do Solfa versions, you can explore the same material with or without hearing the scale-degree names.
One Tonal Center, Many Musical Possibilities
The FET Call-and-Response collections don’t introduce different training philosophies.
They provide different ways to explore the same central idea: Every note has a particular relationship to the tonal center and the surrounding harmony.
Restricting or expanding the available notes changes the listening task, while keeping the harmony constant makes it possible to concentrate on those relationships.
Whether you’re working with three notes or the complete major scale, the essential activity remains the same:
Listen to the notes, recognize their musical functions, and reproduce them with your voice or instrument.
And most importantly, enjoy discovering how they sound.
Explore the Collections
Browse and listen to all four Call-and-Response collections on FunctionalEarTraining’s Bandcamp page.
For a more general introduction, see Understanding the FET Learning Materials or How Do the Call-and-Response Tracks Work?.